OMAHA, Neb. — Warren Buffett says he is feeling fine more than a month after finishing his prostate cancer treatments.

The 82-year-old chairman and CEO of Berkshire Hathaway said Wednesday during an interview on CNBC that the treatments were tiring. He underwent six weeks of radiation treatments and finished them in September

The billionaire investor disclosed his cancer diagnosis in April.

He has said he feels good and his cancer is not considered life-threatening because it was caught early.

Buffett also said he continues to look for a major acquisition for Berkshire Hathaway, but he’s not willing to pay more to compete with other bidders.

Buffett says Berkshire has lost out on a couple of major acquisitions in recent years because private equity firms are bidding aggressively with borrowed money. Berkshire doesn’t borrow for acquisitions.

Buffett told CNBC that Berkshire has about $40 billion cash on hand currently.

Buffett says that Berkshire has made about 15 smaller acquisitions this year. He calls those bolt-on acquisitions because they are just added to Berkshire’s existing businesses.

He also says he has added to Berkshire’s Wells Fargo and IBM stock investments this year, but he’d still prefer to make a big acquisition.